Oh and one more thing Gerry... The spec says that upper wing can be freely adjustable within range of 0... -2,5° ang. I have mounted the upper wing with -1,5°angle and it does good job even at critical speeds (I'm guessing that for such a plane scale Reynolds is most forgiving ). The angle for tail rudder should be ca. +2,0° ang. (nose up). Of course, if one should need another flying characteristics, there are other angles for use..

Marko